update deps

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

go.mod

@@ -2,4 +2,4 @@ module github.com/unistack-org/micro-client-http/v3
 
 go 1.16
 
-require github.com/unistack-org/micro/v3 v3.3.20
+require github.com/unistack-org/micro/v3 v3.4.5

go.sum

@@ -5,8 +5,8 @@ github.com/google/uuid v1.2.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+
 github.com/imdario/mergo v0.3.12/go.mod h1:jmQim1M+e3UYxmgPu/WyfjB3N3VflVyUjjjwH0dnCYA=
 github.com/patrickmn/go-cache v2.1.0+incompatible/go.mod h1:3Qf8kWWT7OJRJbdiICTKqZju1ZixQ/KpMGzzAfe6+WQ=
 github.com/silas/dag v0.0.0-20210121180416-41cf55125c34/go.mod h1:7RTUFBdIRC9nZ7/3RyRNH1bdqIShrDejd1YbLwgPS+I=
-github.com/unistack-org/micro/v3 v3.3.20 h1:gB+sPtvYuEKJQG/k5xnC1TK7MnZbr7wlgyqpYNREdyo=
-github.com/unistack-org/micro/v3 v3.3.20/go.mod h1:LXmPfbJnJNvL0kQs8HfnkV3Wya2Wb+C7keVq++RCZnk=
+github.com/unistack-org/micro/v3 v3.4.5 h1:4Rn6EkJz/web43XGZAPt4NtqDLV2SrYXZxdAfBKF9Ic=
+github.com/unistack-org/micro/v3 v3.4.5/go.mod h1:LXmPfbJnJNvL0kQs8HfnkV3Wya2Wb+C7keVq++RCZnk=
 golang.org/x/net v0.0.0-20210510120150-4163338589ed/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=

http.go

@@ -32,10 +32,10 @@ func filterLabel(r []router.Route) []router.Route {
 */
 
 type httpClient struct {
-	opts    client.Options
 	httpcli *http.Client
-	init    bool
+	opts    client.Options
 	sync.RWMutex
+	init bool
 }
 
 func newRequest(addr string, req client.Request, ct string, cf codec.Codec, msg interface{}, opts client.CallOptions) (*http.Request, error) {

util.go

@@ -21,6 +21,23 @@ var (
 	mu            sync.RWMutex
 )
 
+// Error struct holds error
+type Error struct {
+	err interface{}
+}
+
+// Error func for error interface
+func (err *Error) Error() string {
+	return fmt.Sprintf("%v", err.err)
+}
+
+func GetError(err error) interface{} {
+	if rerr, ok := err.(*Error); ok {
+		return rerr.err
+	}
+	return err
+}
+
 func newPathRequest(path string, method string, body string, msg interface{}, tags []string) (string, interface{}, error) {
 	// parse via https://github.com/googleapis/googleapis/blob/master/google/api/http.proto definition
 	tpl, err := newTemplate(path)
@@ -185,7 +202,6 @@ func (h *httpClient) parseRsp(ctx context.Context, hrsp *http.Response, rsp inte
 		if hrsp.StatusCode == http.StatusNoContent {
 			return nil
 		}
-
 		ct := DefaultContentType
 
 		if htype := hrsp.Header.Get("Content-Type"); htype != "" {
@@ -197,6 +213,7 @@ func (h *httpClient) parseRsp(ctx context.Context, hrsp *http.Response, rsp inte
 			return errors.InternalServerError("go.micro.client", cerr.Error())
 		}
 
+		// succeseful response
 		if hrsp.StatusCode < 400 {
 			if err = cf.ReadBody(hrsp.Body, rsp); err != nil {
 				return errors.InternalServerError("go.micro.client", err.Error())
@@ -204,13 +221,17 @@ func (h *httpClient) parseRsp(ctx context.Context, hrsp *http.Response, rsp inte
 			return nil
 		}
 
+		// response with error
+		var rerr interface{}
 		errmap, ok := opts.Context.Value(errorMapKey{}).(map[string]interface{})
 		if ok && errmap != nil {
-			if err, ok = errmap[fmt.Sprintf("%d", hrsp.StatusCode)].(error); !ok {
-				err, ok = errmap["default"].(error)
+			rerr, ok = errmap[fmt.Sprintf("%d", hrsp.StatusCode)]
+			if !ok {
+				rerr, ok = errmap["default"]
 			}
 		}
-		if !ok || err == nil {
+
+		if !ok || rerr == nil {
 			buf, rerr := io.ReadAll(hrsp.Body)
 			if rerr != nil {
 				return errors.InternalServerError("go.micro.client", rerr.Error())
@@ -218,9 +239,14 @@ func (h *httpClient) parseRsp(ctx context.Context, hrsp *http.Response, rsp inte
 			return errors.New("go.micro.client", string(buf), int32(hrsp.StatusCode))
 		}
 
-		if cerr := cf.ReadBody(hrsp.Body, err); cerr != nil {
-			err = errors.InternalServerError("go.micro.client", cerr.Error())
+		if cerr := cf.ReadBody(hrsp.Body, rerr); cerr != nil {
+			return errors.InternalServerError("go.micro.client", cerr.Error())
 		}
+
+		if err, ok = rerr.(error); !ok {
+			err = &Error{rerr}
+		}
+
 	}
 
 	return err